Electric razor



Oct. 30, 1945. Q HENMNGSEN 2,387,756

ELECTRIC RAZOR Filed Sept. 11, 1 944 CZZJYnmz'rgysem IN V EN TOR.

Patented Oct. 30, 1945 UNITED STATES PATE N'l OFFICE i ELECTRIC nszon Carsten L. Hnningsen, neen ceur. Application September 11,1944, Serial No. 553,606 (01.- 30- 3) displacement of the blades is prevented at one 4'Claims.

This invention relates to electric razors and more especially to heads utilizing rotafry cutters positions by centrifugal forcea'nd also act as fan blades for expelling the cut particles ofv hair from the head.

. having blades which are maintained in cutting" A further object is to provide a head which can be made in various shapes so as to adaptv it to different purposes.

A still further object is to provide an electric end by the ring 4 and at the other end by-the end wall of the slot 9 in which the blade is seated, this I end wall being directlyba'ck of the apex portion, as shown at l2.

' Any-desired number of blades Ii can be used. It is essential, however, that they be mounted to slide freely in the slots. It is also preferred to e have them regularly spaced.

razor head which is simple, compact and emcient and can be handled easily.

With the foregoing and other objects in view which will appear as the description proceeds, the invention consists of certain novel steps in the method and certain details of construction and combinations of parts hereinafter more fully described and pointed out in the claims, it being understood that changes may be made in the method disclosed and in the construction and arrangement of parts without departing from the spirit of the invention as claimed. In the accompanying drawing form of the invention has been shown;

Insaiddrawing: Figure 1 is an elevation of an head embodying the present improvements portion being broken away. 7 I Figure 2 is a longitudinal section cutting portio'nof the razor head, the head being shown in elevation. v

Figure 3 is a section on line 33, ll 'igure" 2.

2. This handle can be of any suitable proportion the preferred lectricl The rotor is containedwithin a casing l3 which is formed of very thin but rigid, hard metal, The base of this casing is fitted about the ring 4, as shown at M while the other end of the casing provides a bearing ii for the rounded end of the .rotor8.

.Asthe more is'coaxial with the ring 4 and .as the rotor l is coaxial with the eccentrically ar- 1 ranged shaft 1, it will be obvious that'a crescentand material. 'It is provided at one .end with a socket 8 in which is seated aring having?- aneccentrically arranged opening I.

opening is ananti-frict'ionbearing .6 shaft lot the motor is journaled'.

Formed wither securedtoshaftl rotor which can be of any suitable'conflguration; 'de pending upon the use to which the-razor'isto-be. put. In the present case this. rotor is conical and is coaxial with the shaft 1. Radial slots 9 are provided in the rotor and extend iohgi tudinally thereof from the base of the. cone-to a point very close to the rounded apex end "I'he'se slots preferably base 0! the cone and in each of blade is mounted to slide freely tion. The blades are so proportioned that when them a cutting they are fully retracted, their outer edges flush with the surfaceof the rotor. longitudinalincrease in depth toward the in aradial dir'ec shaped chamber, l6 thus is formed between the casing or stator and the rotor. The rotor is closely spaced from the casing or stator at their points of closest approach-as shown at H, and the cas- 'ing is so shaped that the outer'edges of the blades bearthroughout their length against the inner-surface of thecasing during the operation of the rotor-,cdntact between the blades and the casingorstato being maintained by centrifugal IOI'OGQ; I through t a portion'to! That portion 'of 'thestator or casing leading from one side of, the point" is provided with a.

plurality of minute openings l8, this apertured area beingextended approximately through onethird the diameter'oi' thefcasing or stator.

Another group of larger openings I9 is provided in the casing 'in the-area leading in the opposite directionfrom the point l1 and extending through approximately one-third the circumference of the stator. ,1 v

The remaining portion of the stator is closed as j I indicatedv at 20.; I

Injpractice the motor isenergizedand will surface orthe casing or stator 20.

hair is to be removed so that the apertured portion i8 will bear against thesurtace; As the cas-- ing or stator is of 'very thin buthard metal, the ends of the hair ,will be pressed through these openings l8 and as the blades wipe across the openings-they wili'shear off the projecting-hair particles. From then on the blades act as fans I and throw the, Particles around and cause them the-rotor to operate at high speed.- This speed-will be sufllcientto shift the blades ,ll outwardly by centrifugal.force so thatv they will all have a wiping action upon the hard, smooth inner to be blown outwardly through the larger openings l9, as indicated by arrows at Figure 3.

The rotor and the stator can be of any desired shape. In the illustrated structure they are conical and such a structure is particularly useful for removing hairs from the nostrils and ears. For removing hair from the face or other smooth surfaces, both the stator and the rotor could be made cylindrical. The change in design is so obvious that illustration and detailed description thereofis not deemed necessary.

It is to be understood. of course, that as the blades constitute fan blades for blowing the particles of hair from the stator casing they likewise constitute means for setting up a suction through the small openings It, so that the hair is thus drawn into these openings where it can be sheared oil. by the blades. I

What is claimed is:

1. An electric razor including a casing constituting a stator, said casing having conically diverging apertured areas and an intermediate imperforate area, the apertures in one area constituting air and hair inlets and the apertures in the other area being larger and constituting air and hair outlets, and a combined cutting and fan blade mounted for rotation in the stator about an the stator and having radial slots. blades extended longitudinally of the rotor and slidable radially in the slots for engagement with the stator by centrifugal force, each of said blades constituting a combined cutting and fan blade.

3. An electric razor including a casing constituting a stator, said casing having conically diverging apertured areas and an intermediate imperforate area,'the apertures in one area constiaxis eccentric to the stator, said blade being maintained by centrifugal force in contact with the inner surface of the stator.

2. An electric razor including a casing constituting a stator, said casing having conically diverging apertured areasand an intermediate imperforate area, the apertures in one area constituting air and hair inlets and the apertures in the other area being larger and constituting air and hair outlets, a rotor eccentrically mounted in tuting air and hair inlets and the apertures in the other area being larger and constituting air and hair outlets, a rotor eccentrically mounted in the stator and having radial slots, blades extended longitudinally of the rotor and slidable radially in the slots for engagement with the stator by centrifugal force, each of said blades constituting a combined cutting and fan blade, the respective apertured areas diverging from the points of nearest approach between the rotor and stator.

4. An electric razor including a handle constituting a motor housing, an electric motor in the handle, a ring seated in one end of the handle and having an eccentric opening. a motor shaft extending through and concentric with said openin a stator extending from and concentric with the rings, said stator having conically diverging apertured areas, the apertures in one area constituting air and hair inlets and the apertures in the other area constituting air and hair outlets,

a rotor carried by and coaxial with the shaft, combined cutting and fan blades mounted for sliding movement within and radially of the rotor, said blades being positioned to engage the inner surface of the stator under the action of centrifugal force.

CARSIEN L. HENNINGSEN. 

